Because the moon has less gravity than Earth does, time passes slightly differently there. This effect was first predicted by ...

Einstein’s Theory of General Relativity is currently our best approximation of how the universe ticks. But there are holes.

There’s an adage coined by [Ian Betteridge] that any headline ending in a question mark can be answered by the word “No”.

Wormholes are often imagined as tunnels through space or time—shortcuts across the universe. But this image rests on a ...

In this last part of our series on recently digitized books from the Wenner Collection, we are focusing on works that ...

Our universe plays by certain rules, which originate from different branches of physics. But sometimes the rules seem ...

Quantum theory and Einstein's theory of general relativity are two of the greatest successes in modern physics. Each works ...

See how Relativity's Terran 1 rocket got from the 3D printer to the launch pad in these highlights. Credit: Relativity Space ...